In English colleges, classes are often arranged in freer and opener______and many jobs are designed for students.

There being no witness on the spot, the police were delayed by the _____ of information about the crime.

To her ________，the salesgirl still helps that old lady.

Though I really enjoyed the Guangzhou 2010 Asian Games, I found it rather difficult to understand the local people because of their confusing ____.

The fans were well behaved,and the game was played without _________.